Infrared sensing water supplementing toilet using domestic waste water flushing

The utility model relates to an infrared induction controlled water supplementing seat type toilet, which is flushed by reusing domestic wastewater which is used in a washbasin. The utility model is characterized in that a water tank is additionally provided with a domestic wastewater recovering pipe which collects the domestic wastewater which is filtered to enter the water tank; a tap water inlet pipe is provided with an infrared induction electromagnetic valve to control water replenishment to reach the purpose of water saving. The utility model has the advantages of simple structure, convenient construction and convenient installation. The water saving effect is obvious by fully utilizing the domestic wastewater to flush the seat type toilet; in general, everyone consumes 4-6 liters water for face wash, mouth wash, etc. everyday, and the consumption of tap water for flushing the toilet once is 4-5 liters; everyone can save 5 liters more or less tap water everyday if the utility model is utilized, and by successively calculation, a medium city of a population of one million can save 1.8 million M < 3 > tap water for one year.